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§ 63.11438 What are the standards for new and existing sources?
(a) For each kiln that fires glazed ceramic ware, you must maintain the peak temperature below 1540 °C (2800 °F) and comply with one of the management practices in paragraphs (a)(1) and (2) of this section:
(1) Use natural gas, or equivalent clean-burning fuel, as the kiln fuel; or
(2) Use an electric-powered kiln.
(b) You must maintain annual wet glaze usage records for your facility.